Definition of Porphyroclast. Meaning of Porphyroclast. Synonyms of Porphyroclast

Here you will find one or more explanations in English for the word Porphyroclast. Also in the bottom left of the page several parts of wikipedia pages related to the word Porphyroclast and, of course, Porphyroclast synonyms and on the right images related to the word Porphyroclast.

Definition of Porphyroclast

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Meaning of Porphyroclast from wikipedia

- A porphyroclast is a clast or mineral fragment in a metamorphic rock, surrounded by a groundm**** of finer grained crystals. Porphyroclasts are fragments...
- occurs adjacent to a relatively large, undeformed particle, such as a porphyroclast. Pressure shadows often appear in thin sections as pairs of roughly...
- sense indicators are C/S fabrics, asymmetric porphyroclasts, vein and **** arrays, mantled porphyroclasts and mineral fibers. All of these indicators have...
- from tectonic reduction of grain size, and commonly containing rounded porphyroclasts and rock fragments of similar composition to minerals in the matrix...
- metamorphic minerals relative to a phase of deformation—before deformation porphyroclast—after deformation porphyroblast. Igneous textures include such properties...
- metamorphism and shearing. The core of the augen is a porphyroblast or porphyroclast of a hard, resilient mineral such as garnet. The augen grows by crystallisation...
- orientation (CPO). mantled and winged porphyroclasts. Well-known examples are theta (Θ)-objects and phi (Φ)-porphyroclasts, as well as sigma (σ)- and delta...
- contains characteristic elliptic or lenticular shear-bound grains (porphyroclasts), normally feldspar, surrounded by finer grained material. The finer...
- can give sense of shear include: sigmoidal veins mica fish rotated porphyroclasts asymmetric boudins (Figure 1) asymmetric folds Transpression regimes...
- NE-SW-trending mineral lineation defined by quartz ribbons, elongate orthoclase porphyroclasts, and flakes of biotite and occasional muscovite. The composition of...